83 results about "Material hardness" patented technology

The invention belongs to the technical field of tool wear measurement, and particularly relates to a machining center tool wear state early warning method based on multi-source data fusion, and the method comprises the steps: calculating a cutting power consumption characteristic through a main shaft load energy mapping model according to the original sampling current and the real-time feeding speed of a main shaft; sliding window sampling is carried out on the cutting power consumption characteristics, and the cutting state disorder degree is calculated; performing nonlinear coupling on the power consumption gradient item and the cutting state disorder degree to obtain a grinding loss stability coefficient; and establishing a dynamic statistical reference surface, and performing cutter state early warning according to the deviation degree of the grinding loss stability coefficient monitored in real time. Instantaneous interference caused by uneven material hardness is effectively recognized and eliminated, meanwhile, signal structure disorder at the initial stage of tool failure is captured, the technical problems that in die steel machining, due to material structure segregation and variable working conditions, the false alarm rate is high, and failure precursor capturing is difficult are solved, and the machining precision is improved. And the monitoring accuracy of the precision machining process is obviously improved.

The invention provides a multi-zone gradient hard alloy material, and relates to the field of hard alloy materials, the multi-zone gradient hard alloy material comprises a drill tip zone, a transition zone and a drill handle zone from the outer layer to the inner layer, the drill tip zone comprises AlTiN, TiCN, ZrC, SiC-B4C composite particles, TaC and Mo2C, the transition zone comprises WC, Co, ZrC, nanoparticles, NbC and carbon nanotubes, and the drill handle zone comprises WC, Co, Ni and ZrC. Through gradient structure design, interface stress concentration in the sintering process is effectively reduced, the hardness and wear resistance of the material are improved, so that the overall crack resistance and service stability of the structure are improved, the service life of the structure is prolonged, and the material is suitable for the field of complex impact loads such as mine drilling and geological survey.

Disclosed are exemplary thermal interface materials (broadly, composites) including silane coupling agents for decreasing material hardness and / or for reducing the spreading of material (s), if any, migrating therefrom. Also disclosed are exemplary methods of decreasing material hardness and / or reducing spreading of material (s), if any, migrating from composites useful for management of heat and / or electromagnetic interference (EMI). In exemplary embodiments, a composite comprises a matrix, one or more functional fillers within the matrix, and silane coupling agent within the matrix. The composite includes at least about 0.5 weight percent of the silane coupling agent based on a total weight of the composite, and / or the composite includes an amount of the silane coupling agent sufficient to decrease hardness of the composite such that the composite is configured to have a high recovery and low compression force and / or to reduce spreading of material(s), if any, migrating from the composite.

The invention relates to a method and a product for eliminating helium bubble defects in nuclear power steel, which comprises the following steps of: treating the nuclear power steel which is damaged by helium ion irradiation to generate helium bubble gathering and surface hardening by pulse current, eliminating the helium bubble defects, recovering the surface hardness of the nuclear power steel, and realizing dynamic self-repairing of irradiation damaged tissues of the nuclear power steel. The method is suitable for pulse current elimination of irradiation helium bubble defects of nuclear power steel such as austenitic stainless steel and austenite-ferrite duplex stainless steel, and is also suitable for pulse current elimination of irradiation helium bubble defects of any metal material. Experiments prove that helium bubbles induced by irradiation cause serious hardening of the surface of the material, and after the helium bubbles are eliminated through pulse current treatment, nanoindentation tests show that the hardness of the material is remarkably reduced and basically returns to the original level before irradiation. The method has the advantages of short treatment time and low energy consumption, and can effectively prolong the service life of key components such as nuclear-grade main pipelines.

The invention discloses a material hardness prediction method based on temperature gradient control, and belongs to the field of material thermal characteristic analysis. The method specifically comprises the following steps: S10, trial-manufacturing a test piece, and designing arrayed cylindrical blind holes in the bottom of the test piece; s20, a heating resistor is additionally arranged in the blind hole, and accurate temperature control over the test piece is achieved by controlling current; s30, measuring the real-time temperature of the key point of the test piece on the upper surface of the test piece by adopting temperature sensors such as PT100 and the like; s40, measuring the hardness value of the material near the corresponding temperature measuring point on the upper surface by using a hardness tester; and S50, a temperature-hardness data model is obtained through fitting by drawing a temperature and hardness curve.

The invention belongs to the technical field of alloy foil preparation, and particularly relates to a preparation method of a FeCrCoW4.5 alloy foil. Comprising the following steps that N passes of cold rolling are conducted on a FeCrCoW4.5 alloy blank, N is larger than or equal to 3, the deformation amount of each pass of cold rolling is 40-70%, annealing treatment is conducted at the temperature of 1000-1200 DEG C after the last pass, work hardening generated by cold rolling is eliminated, final cold rolling is conducted after annealing treatment till the thickness is 0.06 mm, and the alloy foil is obtained. Through multi-pass cold rolling and annealing combined machining, during cold rolling, a large number of dislocation and other defects can be generated in a material, so that the hardness of the material is increased, and the plasticity is reduced; and annealing is carried out after multi-pass cold rolling, atoms in the material can obtain certain energy, dislocation and other defects are rearranged and combined, and part of the defects are eliminated, so that the hardness of the material is reduced, certain plasticity is recovered, and the comprehensive mechanical property of the material is improved.

The present application belongs to the technical field of data processing, and particularly relates to a kind of spring forming equipment operating state monitoring and fault early warning method, its method includes: through the operating state data of key servo shaft, the torque stiffness is calculated, and the forming cycle is automatically divided into elastic contact, plastic forming and unloading demoulding phase;In the plastic forming phase, the influence of raw material hardness fluctuation is stripped by calculating the dynamic rheological resistance index of material and the upper limit of dynamic current;At the same time, the energy topology consistency coefficient containing position weighting function is calculated to capture the slight waveform distortion;Finally, a comprehensive fault early warning index is constructed based on the above index, and the equipment is warned or stopped in stages.The present application can effectively decouple material attribute fluctuation and mechanical failure, and improve the detection sensitivity of early failure.

The invention relates to the technical field of material hardness detection, in particular to a special detection tool for hard alloy holding-up hammer hardness detection, which comprises a detector, and the detector comprises a lifting platform for placing a holding-up hammer; the special detecting tool for detecting the hardness of the hard alloy holding-up hammer further comprises a bearing unit, the bearing unit is arranged on the lifting table and comprises a supporting piece arranged above the lifting table, and a bearing part used for placing the holding-up hammer is installed on the supporting piece. The leveling unit is matched with the bearing unit, it can be ensured that the leveling lower pressing plate in the leveling unit is attached to the detected face of the holding-up hammer, then it is ensured that the detected face of the holding-up hammer is in the horizontal state, a clamp does not need to be manually adjusted in advance, and the working efficiency is improved. The change from the mode that the clamp actively controls the levelness of the holding-up hammer detection face to the mode that the clamp is attached to the horizontal detection face in a self-adaptive mode is achieved, and the risk of levelness deviation caused by clamp abrasion is avoided.

The invention discloses a bending control method and system for steel structure production, and relates to the field of metal processing. The method comprises the following steps: receiving steel structure bending request information of a user side; extracting material hardness, material extension parameters and steel thickness in the bending direction; the interactive bending assembly is used for receiving the initial bending control parameters; generating a k factor prediction value through a k factor prediction module; when the k factor prediction value does not meet a k factor threshold value, optimization is carried out through a bending optimization module; and the steel to be bent is pushed to enter the bending die lower die, and when the expected bending position is met, the bending die upper die is controlled to conduct stamping and bending. The technical problems that the reliability of the calculation result of an empirical formula is poor and bending control is inaccurate due to the fact that the k factor is directly calculated in a traditional mode but the influence factors of the k factor are complex and diverse are solved, and the technical effects that the accuracy of the k factor is ensured and the bending process is accurately controlled are achieved by adopting an advanced control algorithm and a sensor technology.

A non-ferrous metal rolling and trimming device belongs to the field of non-ferrous metal shearing technology. The invention includes a body with a top frame fixedly connected to its top. The top frame contains a trimming buffer mechanism, and the bottom of the inner wall of the top frame has a downward locking mechanism. The downward locking mechanism includes a mounting rod connected at its top to the bottom of the inner wall of the top frame. The mounting rod is connected to a limiting rod via a pressure limiting mechanism. A through groove is formed in the side wall of the mounting rod, allowing it to slide along the outer wall of the fixed rod via a sliding plate. This extends the contact time between the cutter and the hard area, reducing rigid impact cutting to a buffered cutting method. This avoids changes in cutting stress due to fluctuations in material hardness, preventing edge instability. It also extends the service life of the trimming saw and avoids rigid hard impact during cutting. The burr height and crack incidence at the trimming edge are significantly reduced, improving the flatness and smoothness of the trimmed edge.

The utility model relates to the technical field of detection equipment, and discloses material hardness detection equipment for construction engineering, which comprises a working table, supporting legs are fixedly connected to the bottom of the working table, detection equipment is fixedly connected to the top of the working table, a hydraulic rod is fixedly connected to the bottom of the detection equipment, and a mounting mechanism is arranged at the bottom of the hydraulic rod. A fixing mechanism is arranged on the outer side of the mounting mechanism, the mounting mechanism comprises a steel ball assembly and a clamping assembly, the steel ball assembly is arranged at the bottom of the hydraulic rod, and the clamping assembly is arranged in the steel ball assembly. According to the material hardness detection equipment for the construction engineering, through the arrangement of the mounting mechanism, a detection steel ball is clamped in the bottom of a mounting sleeve through a rectangular rod and a positioning clamping barrel, so that a worker only needs to adjust the position of a positioning rod to complete the disassembly and assembly of the detection steel ball, and the detection steel ball is not damaged after being used for a long time; workers can quickly complete replacement, operation is easy, and use of the workers is facilitated.

The invention discloses a plasticity constitutive parameter inversion method for a zinc sulfide infrared optical brittle material, and belongs to the technical field of material mechanical property characterization. According to the method, a zinc sulfide material nanoindentation simulation model is constructed, a nanoindentation experiment is carried out, meanwhile, an Oliver-Pharr method and a Johnson-Cook constitutive equation are adopted to obtain actual material hardness, elastic modulus and plasticity parameters of zinc sulfide to serve as input material parameters, and an automatic simulation experiment is carried out; the method comprises the following steps: acquiring a simulation displacement-load curve under different constitutive parameter combinations, performing prediction optimization on the displacement-load curve by using a prediction network to obtain a Pareto frontier solution, and constructing an inversion model by using an entropy weight method to obtain an optimal solution in a Pareto frontier solution set. According to the research, accurate characterization of the plasticity constitutive behavior of the zinc sulfide infrared optical brittle material is realized, and reliable method support can be provided for constitutive parameter identification and intelligent modeling of other brittle polycrystalline materials.

The invention provides an antistatic PET sheet processing rim charge slitting and recycling device, and relates to the technical field of material recycling treatment, and the top end face of a rear side supporting plate and the top end face of a front side supporting plate are each provided with an installation matching notch; a transmission mounting plate is fixedly mounted between the rear side supporting plate and the front side supporting plate and adjacent to the left side and the right side of the mounting matching notch; by means of the heating function of the softening roller, the PET sheet offcut is preheated and softened, the hardness and shear strength of the softened material are reduced, the friction coefficient and the instant impact force are remarkably reduced when the softened material makes contact with a cutting tool, the toughness of the material can be recovered based on softening treatment, brittle fracture during cutting is reduced, and the service life of the cutting tool is prolonged. The problems that when antistatic PET sheet leftover materials are recycled, due to material characteristics, cutters are prone to being damaged, fragments and dust are generated, cost is increased, value is reduced, the environment is polluted, health is harmed, and purity is affected are solved.

本发明公开了兼具高硬度高韧性的α‑SiAlON / TiN复相陶瓷材料、制备方法及其应用，属于合金切削刀具技术领域。该制备方法采用放电等离子烧结工艺对制备好的原料粉末进行烧结，最终制得的α‑SiAlON / TiN复相陶瓷材料由TiN和α‑SiAlON两相组成，两相间界面结合良好，界面表现出阶梯状结构。本发明将TiN颗粒添加到α‑SiAlON陶瓷中，实现了较高强度的两相界面及显著延长的裂纹扩展路径，合成了性能优异的α‑SiAlON / TiN复相陶瓷材料，硬度大于20GPa，断裂韧性大于6.5 MPa·m1 / 2。

The invention relates to the technical field of hardness detection, in particular to a wear-resistant material hardness detection method and system. The method comprises the following steps: in a loading and pressure maintaining stage, irradiating an indentation area by using a multi-angle discrete spectrum light source and synchronously acquiring an image sequence; identifying a microstructure heterogeneous area based on the reflectivity difference of the image to obtain a material microstructure heterogeneous degree parameter; reconstructing the three-dimensional surface topography of the indentation area, calculating the spatial deviation between the three-dimensional surface topography and the ideal indenter model so as to determine an asymmetric distortion parameter, and obtaining a corrected indentation projection area considering the influence of the heaving or sinking of the material; a hardness value is calculated by using a hardness calculation model, a weight coefficient of the model is adjusted according to a heterogeneity parameter, and input comprises correction of an indentation projection area and an asymmetric distortion parameter. According to the scheme provided by the invention, the accuracy and representativeness of hardness detection can be improved by comprehensively quantifying the three-dimensional shape distortion and the microscopic heterogeneity.

A material hardness automatic detection device disclosed by the present invention is characterized in that a detection assembly comprises a lifting mechanism, a leveling mechanism, a rotating mechanism, a buffer mechanism and a positioning mechanism, the lifting mechanism is connected with a detection device, the lifting mechanism is used for controlling the lifting of the detection device, a detection platform is installed on the positioning mechanism, and a detection tool is positioned through the positioning mechanism. The positioning mechanism is installed on the leveling mechanism through the buffer mechanism, the rotating mechanism is connected with the positioning mechanism and used for controlling the positioning mechanism to rotate, the detection tool is clamped and positioned through the positioning mechanism, the detection tool is prevented from falling off from the detection platform in the detection process, the use stability of the device is improved, and meanwhile the detection efficiency is improved. The detection platform is inclined by a certain angle through the leveling mechanism, so that the surface of a to-be-detected material is in a parallel state, the detection accuracy of the device on different materials is improved, and a buffer mechanism is arranged to buffer the detection platform during detection, so that the use durability of the device is ensured.

The application discloses a simple method for predicting notched tensile strength through material hardness, and belongs to the technical field of material science and engineering. bn The method uses the hardness value H of the material and the notched tensile strength σ bn to fit the relationship between H and σ bn , thereby establishing a formula for predicting the notched tensile strength of other metal materials in the same series. The method is simple and fast in data acquisition, effectively improves the efficiency of obtaining the notched tensile strength of the material, guarantees the integrity of the equipment structure, and can be applied in the fields of manufacturing, nuclear power and aviation.

The invention provides a method for improving the hardness of a 0Cr12Mn5Ni4Mo3Al material, and belongs to the technical field of heat treatment.The method comprises the steps that 1, adjustment treatment is conducted on a 0Cr12Mn5Ni4Mo3Al part, so that carbide is separated out from austenite; 2, the adjusted part is subjected to cold treatment and then dried, and martensite transformation treatment is completed; and 3, aging treatment is conducted on the part subjected to cold treatment, so that the hardness of the part meets the requirement. 0Cr12Mn5Ni4Mo3Al belongs to precipitation hardening stainless steel, the supply state is a hard state or a semi-hard state, precipitation hardening is generated through heat treatment aging, and the strength, hardness and elasticity of the material are improved.

The embodiment of the utility model provides a protective shell comprising a shell body which comprises a back plate and a side frame, the side frame is connected to the back plate, and the side frame and the back plate jointly form a containing cavity in an enclosing mode; the coating layer comprises a main body part and an extension part, the main body part covers one side, far away from the accommodating cavity, of the back plate, and the extension part extends to the side frame from the periphery of the main body part and covers at least part of the side frame; wherein the material hardness of the coating layer is greater than that of the shell. The protective shell provided by the embodiment of the utility model has the characteristics that the protective performance is better and the protective shell is not easy to break.

The present invention relates to a thermal interface material comprising a silane coupling agent that reduces the hardness of the material and / or reduces the diffusion of the material migrating from the thermal interface material. Specifically, exemplary thermal interface materials (generalized, composites) including silane coupling agents for reducing material hardness and / or for reducing diffusion, if any, of materials migrating therefrom are disclosed. Also disclosed are exemplary methods of reducing material hardness and / or reducing material diffusion, if any, migrating from a composite used to manage heat and / or electromagnetic interference (EMI). In an exemplary embodiment, a composite includes a matrix, one or more functional fillers within the matrix, and a silane coupling agent within the matrix. The composite includes at least about 0.5 wt% of a silane coupling agent based on the total weight of the composite, and / or the composite includes a silane coupling agent in an amount sufficient to reduce the hardness of the composite such that the composite is configured to have a high recovery rate and a low compressive force and / or to reduce diffusion of materials, if any, migrating from the composite.

The wind power hub comprises a hub body and threaded sleeves, the hub body is provided with a flange face, a plurality of mounting holes are annularly formed in the flange face, the threaded sleeves are embedded in the mounting holes, the material hardness of the threaded sleeves is larger than that of the hub body, the threaded sleeves are provided with internal threads, and the internal threads are arranged in the threaded sleeves. The threaded sleeve is used for being connected with an external assembly through a threaded piece. According to the wind power hub, the thread sleeves with the hardness larger than that of the hub body are embedded in the mounting holes, the threaded pieces are connected to the hub through the thread sleeves, the thread sleeves can eliminate the thread pitch and thread form deviation between the threaded pieces and the mounting holes, loads are evenly distributed, the strength of threaded connection is improved, and the bearing capacity and fatigue resistance of threaded connection are improved; the threaded sleeve can play a buffering role between the threaded piece and the hub body, impact is reduced, internal threads of the threaded sleeve and internal threads of the mounting hole are prevented from being damaged, and therefore safe operation of a unit is guaranteed, the service life of the hub is prolonged, and economic benefits are improved.

Wear-resistant reinforced cutting tool (10), comprising: a tool body (12) with a first end (12m) and an opposite second end (12b) and with a plate seat (12g), wherein the plate seat (12g) comprises a cylindrical inner side wall (12i), an outer side wall (12h) and a bottom (12j) extending from the cylindrical inner side wall (12i) to the outer side wall (12h); a support (16) fixedly attached to the tool body (12), wherein the first end (12m) of the tool body (12) is arranged adjacent to the support (16); at least one wear-resistant element (18) fixedly attached to the tool body (12) within the insert seat (12g), wherein the at least one wear-resistant element (18) is arranged adjacent to the first end (12m) of the tool body (12); and a cutting tip (20) firmly attached to the carrier (16); wherein the carrier (16), the at least one wear-resistant element (18) and the cutting tip (20) each have a material hardness that is greater than that of the tool body (12); wherein the support (16) completely covers the first end (12m) of the tool body (12) and adjoins at least one wear-resistant element (18).

The invention discloses a zirconium-niobium alloy ceramic composite material and a preparation method thereof, and relates to the technical field of metal ceramic composite material preparation. The composite material is prepared by taking a zirconium-niobium alloy Zr-Nb as a matrix through the steps of pretreatment, annealing treatment, subzero treatment, post-treatment, thermal oxidation, thermal oxidation post-treatment and the like, and the performance can be further optimized through bioactive slurry coating; in the preparation process, the requirement of thermal oxidation on atmosphere is reduced through annealing treatment, and the hardness of the material is enhanced and residual stress is eliminated through subzero treatment. The prepared zirconium-niobium alloy ceramic composite material has the characteristics of high film binding force, high hardness, wear resistance, corrosion resistance, good biocompatibility and the like, and is suitable for the field of medical implants (such as artificial joints).

1. The name of the design product: portable Brinell hardness tester (with load display). 2. The use of the design product: the design product is used for measuring the hardness of metal materials, especially suitable for detecting metal workpieces with low hardness, coarse or uneven organization. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The present application relates to the technical field of pulverizer, and more particularly to a pulverizing equipment modular wear rack plate and a replacement method thereof, which comprises the following steps: acquiring the wear rate value, material hardness value, water content, body vibration amplitude value and original assembly gap value of each module wear rack plate in real time; judging whether there is a particle embedding risk based on the particle embedding risk coefficient; determining whether the embedded particles cause abnormal wear based on the material hardness value and the wear rack plate hardness; identifying whether there is local abnormal wear based on the wear rate mutation coefficient; deciding to execute a single module or group replacement strategy and generating an instruction based on the joint replacement urgency coefficient; calculating the replacement effect compliance coefficient after replacement to verify the replacement effect; and calculating the correction coefficient based on the effect compliance deviation to optimize the characteristic parameters in the replacement process. The present application solves the problems of damage of the split type wear rack plate caused by micro displacement due to particle embedding gap and accurate replacement of the wear rack plate.

This application belongs to the field of cemented carbide materials technology, specifically a binderless cemented carbide, its preparation method, and cutting tools. The cemented carbide composition is: 0.2wt%~0.8wt% Ti, 0.2wt%~1.2wt% Cr, 0wt%~0.5wt% Ni, with the balance being W, C, and unavoidable impurities. Its microstructure includes a WC matrix hard phase and a (W,Ti)C solid solution needle-like reinforcing phase, and the long axis direction of the needle-like reinforcing phase has a preferred orientation within the cemented carbide, with an orientation degree of not less than 80%. In the preparation method, by adopting a Ti and Cr micro-co-alloying composition design, combined with a two-step process of pulsed plasma activated growth and pressure-induced orientation, a high-strength needle-like reinforcing phase + reinforced interface composite structure is successfully constructed in the nano WC matrix, thereby simultaneously achieving ultra-high hardness and high fracture toughness of the binderless cemented carbide, fundamentally solving the core contradiction of the difficulty in achieving both hardness and toughness in this type of material; and realizing in-situ precise control of the morphology and distribution of the reinforcing phase.

A novel multi-component (W,Ti,Y)C superhard material, wherein the superhard material is (W 1‑a‑b Ti a ,Y b C, where 0.1 ≤ a ≤ 0.3, 0.01 ≤ b ≤ 0.05. The (W) 1‑a‑b Ti a ,Y b (W,Ti,Y)C is prepared by ball milling a (W,Ti,Y)C composite powder and a binder phase Co powder at a mass ratio of 92:6, followed by pulsed current-assisted pressure sintering. This invention achieves a synergistic improvement in material hardness and toughness through innovative multi-component design. Secondly, by optimizing the preparation process, effective solid solution of Ti and Y is promoted under relatively low temperature conditions (≤1600℃), forming a fine-grained structure (≤500nm), achieving both high hardness (HV30≥2800) and high toughness (KIC≥15 MPa·m). 1 / 2 The significant improvement in hardness breaks the traditional dilemma of hardness and toughness being at odds; at the same time, it significantly reduces energy consumption (≤80kWh / kg), thereby enhancing the product's market competitiveness.

The invention provides a small-batch stamping part standardized die material design method. According to the method, based on the BUCKINGHAM pi theorem, key physical quantities such as die material hardness, plate hardness, stamping force, plate thickness, tensile strength and fracture toughness are converted into dimensionless indexes, failure criteria such as abrasion, deformation and fracture are established, and a multi-target optimization model of cost and service life is constructed. On the premise that the constraint conditions of abrasion resistance, deformation resistance and fracture resistance are met, medium carbon steel or aluminum bronze is preferentially selected, and high-cost and high-hardness materials are prevented from being used. According to the method, the wear resistance coefficient is calibrated through experiments, the service life prediction is dynamically corrected, and the die cost and development period can be remarkably reduced on the premise of guaranteeing the quality of the stamping part.